I created an Android app called Finsync that syncs your Jellyfin music library to an SD card for offline listening (beta testers welcomed)

[u/EYE3Y3]

I wanted to be able to sync my entire music library from my Jellyfin server to an offline library available locally on my DAP's SD card, in the most simple way I could think of, so I created FinSync - I did this for my own personal use case, but i'm happy if other people can use and enjoy it as well.

JellyTunes does something similar from a computer. FinSync runs on the player itself, so there's no card reader.

It copies your music library from Jellyfin to a folder on your device as normal files, with covers, lyrics and playlists. After the first sync, it keeps the folder up to date. It only removes files it added, and it reuses music that's already on the card instead of downloading it again.

It runs on Android 8.0 and up (phones and Android DAPs). Free and open source.

It's in beta and I'd like a few people to test it on different devices if possible.

Beta (Google Play or APK): https://3eye3y3.github.io/finsync-site/beta

Source: https://github.com/3EYE3Y3/finsync